Reactions of Tetralin with Tritiated Molecular Hydrogen on Pt/Al2O3, Pd/Al2O3, and Pt−Pd/Al2O3 Catalysts

Reactions of tetralin with tritiated gaseous hydrogen were carried out at 5.00 MPa and at 200−400 °C on several noble metal catalysts prepared: Pt/Al2O3, Pd/Al2O3, and Pt−Pd/Al2O3. Hydrogenation and dehydrogenation activities of the catalysts were compared. By tracing changes in the radioactivities of 3H in the products before and after reaction, amounts of the hydrogen exchange between tetralin and tritiated hydrogen were measured to determine the behavior of hydrogen in the reaction. Further, effects of sulfur present in the feedstocks on the catalytic performance were investigated and resultant differences in the sulfur tolerance among the catalysts were clarified.